FESTO cylinder DFM-32-100-B-PPV-A-KF in stock.

Brand

FESTO/Germany

Action Method

Other

Application Areas

Petroleum, Mining, Energy, Electrical, General

FESTO cylinders are pneumatic actuators that convert the pressure energy of compressed gas into mechanical energy. Cylinders come in two types: reciprocating linear motion and reciprocating oscillating motion (see figure). Cylinders that reciprocate linear motion can be further divided into four types: single-acting cylinders, double-acting cylinders, diaphragm cylinders, and impact cylinders.

① Single-acting cylinder: Has a piston rod at only one end. Air is supplied from one side of the piston to generate pressure, which pushes the piston to extend. It returns by a spring or its own weight.

② Double-acting cylinder: Air is supplied alternately from both sides of the piston, outputting force in one or two directions.

③ Diaphragm cylinder: Uses a diaphragm instead of a piston, outputting force in only one direction, and returns with a spring. It has good sealing performance but a short stroke.

④ Impact cylinder: This is a new type of component. It converts the pressure energy of compressed gas into the kinetic energy of a piston moving at high speed (10-20 m/s) to do work.

⑤ Rodless cylinder: A general term for cylinders without a piston rod. There are two main categories: magnetic cylinders and cable cylinders.

A cylinder that reciprocates is called a swing cylinder. A vane divides the inner cavity into two, and air is alternately supplied to the two chambers, causing the output shaft to swing. The swing angle is less than 280°. Other types include rotary cylinders, pneumatic-hydraulic damping cylinders, and stepping cylinders.

FESTO Cylinder Folding Issues

Cylinders are cast. After leaving the factory, cylinders undergo aging treatment to eliminate the internal stress generated during the casting process. If the aging time is too short, the finished cylinder will deform during subsequent operation.

The cylinder experiences complex stresses during operation. Besides static loads such as the pressure difference between the inside and outside of the cylinder and the weight of its components, it also bears the reaction force of steam exiting the stationary vanes, as well as the forces exerted on the cylinder by various connecting pipes under varying temperatures. Under the interaction of these forces, the cylinder is prone to plastic deformation, leading to leakage.

Rapid load increases or decreases in the cylinder, especially during rapid starts, stops, and changes in operating conditions, can cause significant temperature variations. Incorrect cylinder warm-up methods and premature removal of insulation during shutdown maintenance can also generate substantial thermal stress and deformation within the cylinder and on the flanges.

Stress generated during machining or after welding repairs, without subsequent tempering to eliminate it, results in significant residual stress in the cylinder, leading to deformation during operation.

During installation or maintenance, improper maintenance processes and techniques can cause inappropriate expansion clearances in the inner cylinder, cylinder diaphragms, diaphragm sleeves, and steam seal sleeves, or inappropriate expansion clearances in the lug pressure plates. This can generate enormous expansion forces after operation, causing cylinder deformation.

The cylinder sealant used may be of poor quality, contain too many impurities, or be the wrong type. Hard impurity particles in the sealant will prevent a tight seal.

Insufficient tightening of cylinder bolts or substandard bolt material. The tightness of the cylinder mating surfaces depends primarily on the bolt tightening force. Thermal stress and high temperatures generated during unit start-up, shutdown, or load adjustments can cause bolt stress relaxation. If the stress is insufficient, the bolt preload will gradually decrease. If the cylinder bolts are of poor quality, they will elongate under thermal stress and cylinder expansion forces during prolonged operation, leading to plastic deformation or fracture, resulting in insufficient tightening force and cylinder leakage.

Incorrect cylinder bolt tightening sequence. Generally, cylinder bolts are tightened simultaneously from the center outwards, starting from the point of maximum sag or deformation. This shifts the gap from the point of greatest deformation towards the free ends of the cylinder, eventually eliminating the gap. If the cylinder is tightened from both sides towards the middle, the gap will concentrate in the center, forming an arc-shaped gap at the cylinder mating surface, causing steam leakage.

FESTO Cylinders

Detailed Specifications of FESTO Cylinders (Germany)

Product Code | Model | Product Name

543111 | DNCE-32-100-LS-1 | Electric Cylinder

543112 | DNCE-32-200-LS-15-Q | Electric Cylinder

543113 | DNCE-32-300-LS-15-Q | Electric Cylinder

543114 | DNCE-32-400-LS-15-Q | Electric Cylinder

543115 | DNCE-32-100-BS-3-Q | Electric Cylinder

543116 | DNCE-32-200-BS-3-Q | Electric Cylinder

543117 | DNCE-32-300-BS-3-Q | Electric Cylinder

543118 DNCE-32-400-BS-3-Q Electric-Pneumatic Cylinder

543119 DNCE-32-100-BS-10-Q Electric-Pneumatic Cylinder

543120 DNCE-32-200-BS-10-Q Electric-Pneumatic Cylinder

543121 DNCE-32-300-BS-10-Q Electric-Pneumatic Cylinder

543122 DNCE-32-400-BS-10-Q Electric-Pneumatic Cylinder

543123 DNCE-40-100-LS-25-Q Electric-Pneumatic Cylinder

543124 DNCE-40-200-LS-25-Q Electric-Pneumatic Cylinder

543125 DNCE-40-400-LS-25-Q Electric-Pneumatic Cylinder

543126 DNCE-40-600-LS-25-Q Electric-Pneumatic Cylinder

543127 DNCE-40-100-BS-5-Q Electric-Pneumatic Cylinder

543128 DNCE-40-200-BS-5-Q Electric-Pneumatic Cylinder

543129 DNCE-40-400-BS-5-Q Electric-Pneumatic Cylinder

543130 DNCE-40-600-BS-5-Q Electric-Pneumatic Cylinder

543131 DNCE-40-100-BS-127-Q Electric-Pneumatic Cylinder

543132 DNCE-40-200-BS-127-Q Electric-Pneumatic Cylinder

543133 DNCE-40-400-BS-127-Q Electric-Pneumatic Cylinder

543134 DNCE-40-600-BS-127-Q Electric Cylinder

545210 DNCE-32-LS-15-Q Electric Cylinder

545211 DNCE-32-BS-3-Q Electric Cylinder

545212 DNCE-32-BS-10-Q Electric Cylinder

545213 DNCE-40-LS-25-Q Electric Cylinder

545214 DNCE-40-BS-5-Q Electric Cylinder

545215 DNCE-40-BS-127-Q Electric Cylinder

188560 Double-acting Cylinder DSEU-20-10-P-A

188561 Double-acting Cylinder DSEU-20-25-P-A

188562 Double-acting Cylinder DSEU-20-40-P-A

188563 Double-acting cylinder DSEU-20-50-P-A

188564 Double-acting cylinder DSEU-20-80-P-A

188565 Double-acting cylinder DSEU-20-100-P-A

188566 Double-acting cylinder DSEU-20-125-P-A

188567 Double-acting cylinder DSEU-20-160-P-A

188568 Double-acting cylinder DSEU-20-200-P-A

188569 Double-acting cylinder DSEU-20-250-P-A

188570 Double-acting cylinder DSEU-20-320-P-A

188572 Double-acting cylinder DSEU-25-10-P-A

188573 Double-acting cylinder DSEU-25-25-P-A

188574 Double-acting cylinder DSEU-25-40-P-A

188575 Double-acting cylinder DSEU-25-50-P-A

188576 Double-acting cylinder DSEU-25-80-P-A

188577 Double-acting cylinder DSEU-25-100-P-A

188578 Double-acting cylinder DSEU-25-125-P-A

188579 Double-acting cylinder DSEU-25-160-P-A

188580 Double-acting cylinder DSEU-25-200-P-A

188581 Double-acting cylinder DSEU-25-250-P-A

188582 Double-acting cylinder DSEU-25-320-P-A

188583 Double-acting cylinder DSEU-32-25-P-A

188584 Double-acting cylinder DSEU-32-40-P-A

188585 Double-acting cylinder DSEU-32-50-P-A

188586 Double-acting cylinder DSEU-32-80-P-A

188587 Double-acting cylinder DSEU-32-100-P-A

188588 Double-acting cylinder DSEU-32-125-P-A

188589 Double-acting cylinder DSEU-32-160-P-A

188590 Double-acting cylinder DSEU-32-200-P-A

188591 Double-acting cylinder DSEU-32-250-P-A

188592 Double-acting cylinder DSEU-32-320-P-A

188593 Double-acting cylinder DSEU-40-25-P-A

188594 Double-acting cylinder DSEU-40-40-P-A

188595 Double-acting cylinder DSEU-40-50-P-A

188596 Double-acting cylinder DSEU-40-80-P-A

188597 Double-acting cylinder DSEU-40-100-P-A

188598 Double-acting cylinder DSEU-40-125-P-A

188599 Double-acting cylinder DSEU-40-160-P-A

The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi